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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=32752675014 |
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Table of Contents:
- Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism BRUNO V. B. RODRIGUES MANOEL B. AGUIAR-NETO UBIRAJARA DE OLIVEIRA ADALBERTO J. SANTOS ANTONIO D. BRESCOVIT MARLÚCIA B. MARTÍNS ALEXANDRE B. BONALDO Multidisciplinaria (Ciencias Naturales y Exactas) Amazon araneae diversity fragmentation A list of spider species is presented for the Belém Area of Endemism, the most threatened region in the Amazon Basin, comprising portions of eastern State of Pará and western State of Maranhão, Brazil. The data are based both on records from the taxonomic and biodiversity survey literature and on scientific collection databases. A total of 319 identified species were recorded, with 318 occurring in Pará and only 22 in Maranhão. About 80% of species are recorded at the vicinities of the city of Belém, indicating that sampling effort have been strongly biased. To identify potentially high-diversity areas, discounting the effect of variations in sampling effort, the residues of a linear regression between the number of records and number of species mapped in each 0.25°grid cells were analyzed. One grid, representing the Alto Turiaçu Indigenous land, had the highest deviation from the expected from the linear regression, indicating high expected species richness. Several other grid cells showed intermediate values of the regression residuals, indicating species richness moderately above to the expected from the model. 2017 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32752675014 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.89